.page-about {
  --about-line: rgba(35, 230, 200, .22);
  --about-line-soft: rgba(142, 179, 199, .16);
  --about-wash: rgba(6, 24, 38, .86);
  --about-grad: linear-gradient(90deg, #23E6C8 0%, #F3B84B 100%);
  background: var(--ink-950);
  color: var(--text);
  overflow-x: hidden;
}

/* ——— 首屏 ——— */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + clamp(40px, 7vw, 84px));
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.9);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(90% 70% at 14% 0%, rgba(20, 92, 102, .6) 0%, transparent 62%),
    linear-gradient(180deg, rgba(6, 24, 38, .55) 0%, var(--ink-950) 94%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__eyebrow {
  margin: clamp(26px, 5vw, 44px) 0 0;
  color: var(--teal);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(33px, 7vw, 64px);
  line-height: 1.07;
  letter-spacing: .008em;
  color: var(--paper);
  margin: 14px 0 20px;
  max-width: 18ch;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  color: var(--text-dim);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  margin: 0;
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 5vw, 48px) 0 0;
  background: var(--about-line);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-figures__item {
  background: var(--about-wash);
  padding: 16px 14px 18px;
}

.page-about .about-figures__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--text-mute);
  margin: 0;
}

.page-about .about-figures__val {
  font-family: var(--font-mono);
  font-size: clamp(23px, 4vw, 32px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  margin: 8px 0 0;
}

/* ——— 章节骨架 ——— */
.page-about .about-chapter {
  position: relative;
  padding-block: clamp(46px, 7vw, 92px);
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-line) 22%, rgba(243, 184, 75, .24) 76%, transparent);
}

.page-about .about-chapter--tint {
  background: linear-gradient(180deg, rgba(13, 41, 66, .6) 0%, rgba(13, 41, 66, .12) 62%, transparent 100%);
}

.page-about .about-chapter__head {
  max-width: 72ch;
}

.page-about .about-chapter__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--gold);
  margin: 0;
}

.page-about .about-chapter__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(25px, 4.4vw, 40px);
  line-height: 1.16;
  color: var(--paper);
  margin: 12px 0 14px;
  text-wrap: balance;
}

.page-about .about-chapter__intro {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-dim);
  margin: 0;
  max-width: 64ch;
}

/* ——— 版本长卷时间线 ——— */
.page-about .about-timeline {
  position: relative;
  margin-top: clamp(28px, 4vw, 46px);
  padding-left: 34px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--teal) 0%, var(--gold) 68%, var(--coral) 100%);
  opacity: .42;
}

.page-about .about-stage {
  position: relative;
  padding-bottom: 26px;
}

.page-about .about-stage:last-child {
  padding-bottom: 0;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 2px solid var(--teal);
  box-shadow: 0 0 0 4px rgba(35, 230, 200, .1);
}

.page-about .about-stage--now::before {
  border-color: var(--gold);
  box-shadow: 0 0 0 5px rgba(243, 184, 75, .16);
}

.page-about .about-stage__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--teal);
  margin: 0 0 6px;
}

.page-about .about-stage--now .about-stage__meta {
  color: var(--gold);
}

.page-about .about-stage__title {
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  margin: 0 0 6px;
}

.page-about .about-stage__text {
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
  margin: 0;
  max-width: 66ch;
}

/* ——— 配图 ——— */
.page-about .about-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-about .about-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius);
  background: var(--ink-800);
  object-fit: cover;
}

.page-about .about-figure__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--text-mute);
}

/* ——— 团队名录 ——— */
.page-about .about-roster {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  background: var(--about-line-soft);
  border-top: 1px solid var(--about-line-soft);
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-roster__item {
  background: var(--about-wash);
  padding: 20px 18px 22px;
}

.page-about .about-roster__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  margin: 0;
  letter-spacing: .02em;
}

.page-about .about-roster__name {
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--paper);
  margin: 10px 0 8px;
}

.page-about .about-roster__text {
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-dim);
  margin: 0;
}

/* ——— 复核三道关 ——— */
.page-about .about-checks {
  list-style: none;
  counter-reset: chk;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .about-checks li {
  position: relative;
  padding-left: 46px;
}

.page-about .about-checks li::before {
  counter-increment: chk;
  content: "0" counter(chk);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold);
  border: 1px solid rgba(243, 184, 75, .42);
  border-radius: 50%;
  background: rgba(243, 184, 75, .06);
}

.page-about .about-checks__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
  margin: 4px 0 6px;
}

.page-about .about-checks__text {
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
  margin: 0;
  max-width: 66ch;
}

.page-about .about-note {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 16px 18px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-dim);
  background: rgba(35, 230, 200, .06);
  border-left: 2px solid var(--teal);
}

/* ——— 协作网络 ——— */
.page-about .about-network__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 42px);
  align-items: start;
}

.page-about .about-network__list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-network__list li {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-network__val {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 600;
  line-height: 1;
  color: var(--teal);
}

.page-about .about-network__key {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-network__scroll {
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-about .about-network {
  display: block;
  width: 100%;
  min-width: 520px;
  height: auto;
}

/* ——— 阅读体验规格 ——— */
.page-about .about-spec {
  margin: clamp(24px, 4vw, 38px) 0 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-spec__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 14px 0 15px;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-spec__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--teal);
}

.page-about .about-spec__val {
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
  margin: 0;
  max-width: 68ch;
}

/* ——— 里程碑 ——— */
.page-about .about-miles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-mile {
  padding: 20px 18px 22px;
  background: var(--ink-800);
  border: 1px solid rgba(142, 179, 199, .18);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 rgba(2, 11, 18, .5);
}

.page-about .about-mile__val {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 28px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  margin: 0 0 10px;
  letter-spacing: .01em;
}

.page-about .about-mile__key {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0;
}

/* ——— 文内链接与收尾 ——— */
.page-about .about-inline-link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(35, 230, 200, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--gold);
  border-color: rgba(243, 184, 75, .7);
}

.page-about .about-links {
  margin: clamp(24px, 4vw, 34px) 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-mute);
}

.page-about .about-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
  padding: clamp(24px, 4vw, 44px);
  background:
    linear-gradient(135deg, rgba(20, 92, 102, .58) 0%, rgba(13, 41, 66, .88) 62%, rgba(6, 24, 38, .92) 100%);
  border: 1px solid var(--about-line);
  border-radius: var(--radius);
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(23px, 3.8vw, 34px);
  line-height: 1.2;
  color: var(--paper);
  margin: 12px 0 14px;
  text-wrap: balance;
}

.page-about .about-cta__text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  margin: 0;
  max-width: 62ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-about .about-cta__actions .btn {
  flex: 0 1 auto;
}

/* ——— 响应式 ——— */
@media (min-width: 640px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-roster {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-miles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-spec__row {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-network__grid {
    grid-template-columns: 1.15fr 1fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-cta {
    grid-template-columns: 1.6fr 1fr;
    align-items: end;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1080px) {
  .page-about .about-roster {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-miles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-inline-link {
    transition: none;
  }
}
<<<END>>>